It may be innocuous but in the past spammers have used these accounts to “age” thier profile before activating it knowing that we are keeping an eye on new accounts. Then suddenly an account from 3 months ago starts trying to link to whatever spam or DM users phishing attempts.
Personally I would like better tools to head those off before they become a problem rather than waiting. I would also help if we had stronger tools to prevent bots from signing up in the first place.